#5B9DB2
Closest named color: Cadet Blue (#5F9EA0). oklch(66% 0.074 220.5), rgb(91, 157, 178).
Aa
Black text reads best on this color (6.91:1).
About this color
#5B9DB2 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 66%, its chroma 0.074 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.028 away. Black text reads best on it, at 6.91:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 6.91:1 |
| White text | 3.03:1 |
Values
| HEX | #5B9DB2 |
| RGB | rgb(91, 157, 178) |
| HSL | hsl(194, 36%, 53%) |
| OKLCH | oklch(66% 0.074 220.5) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #5B9DB2 | 3.03:1 | AA large text | Lc -62.4 | Content text, not long reading |
| Black text on #5B9DB2 | 6.91:1 | AA | Lc 47.0 | Large or bold text, headings |
| #5B9DB2 text on white | 3.03:1 | AA large text | Lc 57.1 | Large or bold text, headings |
| #5B9DB2 text on black | 6.91:1 | AA | Lc -44.7 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3ECEF
oklch(93.7% 0.01 219.6)
-
Step 200
200
#CBDDE2
oklch(88.6% 0.021 216.2)
-
Step 300
300
#A8C7D1
oklch(81% 0.036 219.3)
-
Step 400
400
#78A9BA
oklch(70.6% 0.058 221.5)
-
Step 500
500 (this color)
#5B9DB2
oklch(66% 0.074 220.5)
-
Step 600
600
#337E94
oklch(55.6% 0.08 220.4)
-
Step 700
700
#246A7E
oklch(49% 0.075 220.5)
-
Step 800
800
#205767
oklch(42.8% 0.063 220.4)
-
Step 900
900
#214854
oklch(37.9% 0.048 220.5)
-
Step 950
950
#142A31
oklch(27% 0.031 220.6)
#5B9DB2 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #909AB3 | 0.062 |
| Deuteranopia (no green cones) | #8390B2 | 0.055 |
| Tritanopia (no blue cones) | #2DA4A4 | 0.047 |
| Achromatopsia (no color) | #949494 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B9DB2
#5B9DB2
oklch(66% 0.074 220.5)
- #BA836F
#BA836F
oklch(66% 0.074 40.8)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #5B9DB2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.028
- Greyblue #77A1B5 ΔE 0.034
- Blue Grey #758DA3 ΔE 0.048
- Silver Lake Blue #778DA9 ΔE 0.049
- Bluegrey #85A3B2 ΔE 0.052
- Bluey Grey #89A0B0 ΔE 0.054
- Dull Teal #5F9E8F ΔE 0.054
- Faded Blue #658CBB ΔE 0.055
Use #5B9DB2 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.